水熱劣化したSCR/DPF 触媒のStandard SCR 反応の反応速度定数算出モデルの構築

田中 光太郎; 大矢 直樹; 立野 僚; 藤本 輝光; 境田 悟志; 金野 満; 冨田 衷子; 三木 健

doi:10.11351/jsaeronbun.51.256

Research Paper

Construction of Model for Estimating Standard SCR Reaction Rate Constant Over Hydrothermally Aged SCR/DPF Catalyst

Kotaro Tanaka, Naoki Ohya, Ryo Tateno, Teruaki Fujimoto, Satoshi Sakaida, Mitsuru Konno, Atsuko Tomita, Takeshi Miki

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Keywords: Heat engine, De-NOx catalyst/selective catalytic reduction NOx removal/NOx reduction catalyst, Emission gas/harmful emissions, SCR/DPF, Hydrothermal aging

JOURNAL FREE ACCESS

2020 Volume 51 Issue 2 Pages 256-262

DOI https://doi.org/10.11351/jsaeronbun.51.256

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Abstract

Based on the detailed analysis of properties of two types of SCR/DPF catalysts, which are used for aftertreatment systems for diesel automobiles, the hydrothermal aging factors have been investigated. Using the aging factors, the model for estimating the rate constant of the standard SCR reaction over hydrothermally aged SCR/DPF catalyst was constructed. It is confirmed that the rate constant of the standard SCR reaction is estimated using the determined aging factor regardless of the types of the catalysts.

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